Contact
| 1963 - 1968 | Study of Mathematics at the University of Rostock |
| 1968 | Master thesis (Diplom) at the University of Rostock |
| 1968 - 1970 | Research student at the Moscow State University at the chair ''Functional Analysis and Function Theory''. Advisor: Prof. Dr. G.E. Shilov |
| 1970 - 1972 | Research fellow at the Department of Mathematics of the University of Rostock under the advice of Prof. Dr. I. Fenyö. |
| 1973 | Ph.D. thesis (Dissertation A) ''On the Nonstandard Theory of Distributions'' |
| 1972 - 1978 | Assistant Professor at the Department of Mathematics of the University of Rostock |
| 1978 - 1982 | Senior Lecturer (Oberassistent) at the Department of Mathematics of the University of Rostock |
| 1981 | Second Ph.D. thesis (Habilitation) ''Classical Regularity of Elliptic Boundary Value Problems in non-smooth domains in R n ", ''facultas docendi'' |
| 1982 | Associate Professor (Hochschuldozent) for Analysis at the University of Rostock |
| 1989 - 1993 | Extraordinary Professor for Analysis at the University of Rostock |
| 1993 - 1997 | Scientific work at the University of Stuttgart at the chair of Prof. Dr. W. L. Wendland |
| 1997 - 1998 | Sofia Kovalevskaia guest professorship at the University of Kaiserslautern |
| since 1998 | Scientific work at the University of Stuttgart |
| 2000 | "Umhabilitation" at the University of Stuttgart |
| 2003 | Extraordinary Professor at the University of Stuttgart |
| 2011 | Retired |